My cursor loaded with text does not place the text within the frame created on master page
Hello,
I am having a problem that is driving me crazy. I am putting together a book. I created the text frames in the master pages,

when I try to place the text (smart text reflow), the loaded cursor recognizes the text frame and it does show the parenthesis. However, when I click the shift button to reflow the text only the snake arrow appears (without the parenthesis) - I could not make an screen shot of this-.
Then, I click to place the text and it creates a new text box on a different place and it also creates new text frames in the following pages filling up the margins (my text frames are smaller than the margins to better show it to you).

As you can see in the first screen shot I threatened the text frames in the master page and I also selected those text frames as primary text frames in the master page.
I also saw that year ago people asked this same questions without getting a successful answer.
Do you know how to solve this?
Thank you!!
Alex